Refrigerating apparatus.



S.'MAGKI'N. \REFRIGBRATING APPARATUS.

APPLIOATION FILED man, 1913.

Patented Apr. 28, 1914 2 SHEETS-SHEET 1.

' INVENTOR 5/7/4 Mficvr/N WITNESSES {64/ ATTORNEYS S. MAGKIN.

REFRIGEBATING APPARATUS.

APPLICATION rum) AUG.11, 191s.

Patent ed Apr. 28, 1914,

2 SHEETS-BHBET 2.

' IfI'I/E/VTUR 5 7 Mfic/r/N,

ATTORNEYS WITNESSES 24K- UNiTED STATESTATENT OFFICE.

SAM MAGKIN, or LAREDOY, Texas.

Barman-Karma arrana'rus Specification of Letters Patent.

Patented Apr. 28', 1914.

Application and August 11, 1913. Serial No. 784,215.

To ail 'IIP/tOl/b it may concern Be it known that I, SAM MAOKIN, a citizen of the United States, and a resident of Laredo. in the county of Webb and State of Texas, have made certain new and useful Improvements in Refrigerating Apparatus, of which the following is a specification.

My invention relates to-improvements 1n refrigerating apparatuses, more particularly to those for the purpose of hardening ice cream, and it consists'in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide a device of the type mentioned in which a series of shelves is provided with means for revolving these shelves and bringingthem into position whereby the contents of the shelves may be removed or replaced.

A further object of my invention is to provide a novel form of vault for receiving the sh elves and novel means for. maintainin the vault in a cold condition.

,A further object of my invention is to provide a device which will economize storage room.

Other objects and advantages will appear in the following specification "and the novel features of the device will be particularly pointed out in theappended claims.

My invention is illustratedin the accom'- panying drawings forming part of this application in which Figure 1 is a horizontal section through the device, Fig. 2 is a section along the line 2--2 of Fig. 1, Fig. 3 is a section along the line 33 of Fig. 1, Fig. 4 is a section along the line 44 of Fig. 1, Fig. 5 is a detail face view of a scraping device, 6 is a rear view of the scraping device, and Fig. 7 is :1V section along the line 7-7 of Fig. 5.

In carrying out my invention I provide a. vault or inclosure having non-conducting walls 1. As will beseen from Fig. 1 the vault is divided into two compartments 2 and 3 respectively by means of the pariition 4. Within the compartment 2 is disposed a central shaft 5 which supports a series of circular shelves 6, these shelves being. hraced iby means of brace rods 7. Suitable thrush hearings 8, are provided at the bottomandliearings 9 are also provided at thetop forlieeping the shaft in alinement.

In the compartment 2 is disposed a rec-' tangular tank 10 which is made of any suitable material, this tank being provided with a cylindrical recess arranged to receive the circular shelves, and being raised from the floor.

As will be seen from Fig. 1 the shelves 6 extend into close proximity to the walls 10 of the tank, only enough space being left to provide clearance. Disposed Within the tank 10 is an ammonia seen from Fig. 1 the tank 10 terminates short of the wall 4 so as to leave a space on each side of the central extension 2 of the compartment 2. cold closets by providing therein shelves such as those s own at 12 in Fig. 4. Alternate shelves are supported by the inner partitions 4* While intermediate shelves are supported by the outer walls 1. A central door 18 is provided for permitting access to the revoluble frame bearing the shelves 6-, while the conduit 16' provided for that purpose, thence downwardly through the conduit 17 to the bottom of the op osite closet, thence oppositely around the s elves in the second closet and above the tank 10 in the compartment 2. It will be seen that owing to the circular shape of the compartment 2 and the fact that the-air is drawn out from the compartment at the bottom on one side and forced. into the compartment at the top on the other a revolving current of the compartment2. A complete circulation of air in the cold closets is thus assured.

In order to provide for the circulation of the brine in the tank 10 I may use a'pump 19 (see Fig. 3). This pump communicates with the bottom of the tank 10 on one side by means of a pipe 20, thus drawing the brine through the pipe and forcing it upwardly through the pipes 21 and 22 into the top of the tank 10 through a pipe 23. i Carried by the frame which is composed i of the shelves, the shaft 5, and the brace members, is a scraping device like that shown in Fig. 5. This is composed prefer- I ably of a strip 24whi'ch is disposed vertii cally and to which is secured at intervals curved spring member 25 (see Figs. 6 and 7). On the opposite side of the curved coil 11. As will bev This space I utilize as' around the shelves 12 I thence across the top of the extenison 2 and air is set up in spring members. are secured strips 26, these strips being pivoted to each other and to the,

' springs, as shown in Figs. 5, 6 and 7. The

members 26 are arranged to engage the wall of the tank 10 or the inner wall of the circular inclosure formed by the recess in the tank. l

'From the foregoing description of the various parts of the device the operation thereof is readily understood.

The chamber 3 forms an entrance (:ll llIl-' her and is closedby a door 27. Acces s -may be had to the shelvesfi for placing thereon articles such as bricks of ice cream designed to be hardened or any other commodity. which it is desired to maintain in a coldcondition. The shelves may be easily revolved so as to bring any of the articles into easy .gi'eaeh of the user. The constant circulation of air-tends to thoroughly cool the articles and to effect the uniform temperature not I only within the inner circular portionv of the ice. The provision of the circular shelves .er'mi'ts the placing. of the wall of the coolmg; tank 10 "into close proximitysto the shelvesso that great economy of gained. As the shelves are turnedIf-on -their I chillingthe air.

central axis the members 26 come in contact with 'the wall 10 of the tank "andgscrape therefrom any frost which tends to accumulate. In view of the fact that the frost tends to act-as a heat insulator it will be seen that the provision of this scraping device is imortant, since itremoves the. frost thereby eaving the shelves bare to the circulating air and thus permitting the rapid cooling of the device-by convection currents. -'Ihe purpose of joining the strips 26 is to provide means whereby the springs will give to any inequalities on the wall 10" of the tank. The springs. 25 also tend to give when the obstruction is metand will spring back im-.

mediately into place, thus the scraping ap-' paratus is self adjusting.

It should be noted that the air has a tendency to move in a straight line and thus the air which is driven in at the top of the compartment 2 impinges onthe cold wall of the tank and hugs the wall from one side of "the compartment to the other, thus thoroughly The circular v the scrafper removingall frost from the cooling sur ace of the tank, while merely revolving the shelves in the act of placing-articles on to be cooled or frozen. This virtually makes'the action of the scrapers automatic and does away with the necessity of additional apparatus to turn the scrapers. Iain-aware that other forms of the device based upon the same general plan might be made, but I consider as my own all such modifications as fairly fall within the spirit and scope of thelinvcntion.

I claim:

1. In a refrigerating vault, an outer casing having non-conducting walls, a brine tank disposed within said casing, said'brinc tank having a cylindrical recess and an extension of said recess on one side thereof, a partition disposed-within said casing and spaced from one side of said brine tank, the space between said partition and Flld brine tank constituting cold closets, a shaft disposed within the recess in said brine tank, and a series of circular shelves carried .Lhy said shaft, the edges of said shelves being in close proximity to the walls of said tank.

2. In a refrigerating vault, an outer easing havingnon-conducting walls, a 'brine tank disposed within said casing, said brine tank having a eylindricalrecess and an extension of said recess on one side thereof, a partition disposed within said casing and spaced from one side of said brine tank, the space between said partition and said brine tank constituting cold closets, a shaft disposed within the recess insaid brine tank, a series. of circular shelves carried by said shaft, the edgesxof said shelves being in close proximity to the walls of said tank, means for cooling theibrine in the tank, means for causing a circulation of the brine in the tank, and means for causing a circulation of air insaid'cold closets.

3. In a refrigerating vault, a casing having non-conducting walls, a brine 'tank dis.- posed within said casing at one end thereof, said brine tank having a central cylindrical recess and being provided with an extension of said recess on one side, a transverse main partition disposed ;.within said casing and spaced from said brine tank, auxiliary partitions extending from said firstv mentioned partitions toward said central recess, the space between said main partition and the wall of said brine tank, and the auxiliary partition and the wall of the casing constituting cold closets, a central shaft disposed in the recess in said brine tank, circular shelves sccured to and carried by said shaft, and a scraping device carried by said shelves and arranged to engage the cylindrical wall of said brine tank. I

4. In a refrigerating vault, a. casing having non-conducting walls, a brine tank disform of the tank permits of posed within said casing atone end thereof, said brine. tank having a central cylindrical recess and being provided with an extension of said recess on one side, a transverse main partition disposed within said casing and spaced from said brine tank, auxiliary the space between said main said rine tan means for causing a circulation containing the shelves.

partitions extending from said first mentioned partitions toward said central recess v artition and the wall of said brine tank, an the auxilia partition and the wall of the casing constltuting cold closets, a central shaft'disposed in the recess in said brine tank, circular shelves secured to and carried b said shaft,

a scraping device carried by sai shelves and: cglindrical wall of arm ed to en ge the or carrying said brine tank, means of the brine in the brine tank, and means for causing a circulation of air throu h the cold closets and through the cylindrical recess 5.;' In afrefrigerating vault a casing having non-conducting walls, a brine tank disof said recess on one partition disposed posed within said casing at one end thereof I said brine tank having a central cylindricai recess and being provided with. an extension side, a transverse main within said casing and cylindrical recess.

spaced from said brine tank, auxiliaryjpartitions extending from said first mentioned partitions toward said central recess, the space between said main partition and the wall of said brine tank, and the auxiliary partition and the wall of the tuting cold closets, a central shaft disposed in the recess in said brine tank, circular shelves secured to and carried b saidshaft, a scraping device carried by sai shelves and arranged to engage the cylindrical wall of said rine. tank, means for carrying said brinetank, means for causing a circulation -of the brine in the brine tank, means for causing a circulation of air through the cold closets and through the cylindrical recess containing the shelves, and doors for said cold closets and for the extension of said SAM MACKIN. Witnesses: R. A. MILLAR,

Lois F. MARTINEZ.

casing consti- 

